641024280 has 448 divisors, whose sum is σ = 2478924000. Its totient is φ = 147806208.

The previous prime is 641024257. The next prime is 641024291. The reversal of 641024280 is 82420146.

641024280 is a `hidden beast` number, since 6 + 410 + 242 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 7202476 + ... + 7202564.

Almost surely, 2^641024280 is an apocalyptic number.

641024280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641024280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1239462000).

641024280 is an abundant number, since it is smaller than the sum of its proper divisors (1837899720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641024280 is a wasteful number, since it uses less digits than its factorization.

641024280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 641024280 is about 25318.4572989746. The cubic root of 641024280 is about 862.2333693790.

The spelling of 641024280 in words is "six hundred forty-one million, twenty-four thousand, two hundred eighty".